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RE: Drake 2880 crystal update - ICM



Mark, thanks again for great job you did with the 2880 order! Did anyone
ever work up a group purchase for the crystals? Or, is it best just
to order one from ICM?

Tom
KK4XZ

At 11:57 AM 2/8/2001 -0600, you wrote:
>That's right Greg, the changed to a new part number:
>
>International Crystal Mfg. has a part number for the 8.8125mhz crystal
>commonly used to convert the unit for 144IF. Part# 540288 HC-18T Cold Weld
>Holder HC-49U $19.95
>
>Mark - N0NSV
>
>-----Original Message-----
>From: owner-AMSAT-BB@AMSAT.Org [mailto:owner-AMSAT-BB@AMSAT.Org]On
>Behalf Of Gregory Beat
>Sent: Thursday, February 08, 2001 10:53 AM
>To: amsat-bb@AMSAT.Org
>Subject: [amsat-bb] Drake 2880 crystal update - ICM
>
>
>Talked to International Crystal (ICM) to place my Drake 2880 crystal order
>this morning.
>
>They are now running about 2 or 3 weeks from order to delivery ( high
>stability 10 ppm crystal ).
>[They received a number of orders for the Drake 2880 crystals over the past
>few weeks].
>
>Order desk informed me that Millcom and ICM's engineering departments
>reviewed the 2880 and decided upon the usage of the HC-49/Short case
>for the 8.812500 MHz crystal. (144 MHz IF).
>I believe this was reported earlier last year on the amsat-bb reflector.
>
>This crystal will meet the height of the Drake case ( 11 cm clearance
>height ) as well as
>proper fit the PC board spacing.
>
>ICM believes they addressed previously reported problems with other
>crystal cases :
>   - 11 mm maximum height of crystal
>   - Unacceptable stress on crystal wire leads to fit the PC board spacing
>   - Shorts against the board or die-cast case
>
>G. Beat
>w9gb
>
>
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